Buy ProMaster Li-ion Battery (7.2V 1700mAh) - Sony NP-FM500H - National Camera Exchange
Amazon.com : Neewer 7.2V 2600mAh Rechargeable Li-ion Battery Pack Replacement for Sony NP-F550/570/530 Compatible with Sony HandyCams Polaroid Other LED On-Camera Video Lights Using NP-F550 Batteries : Electronics
Amazon.com : Sony NPFM500H Li-Ion Rechargeable Battery Pack for Sony Alpha Digital SLR Cameras - Retail Packaging : Electronics
Amazon.com : Neewer 7.2V 2600mAh Rechargeable Li-ion Battery Pack Replacement for Sony NP-F550/570/530 Compatible with Sony HandyCams Polaroid Other LED On-Camera Video Lights Using NP-F550 Batteries : Electronics